Honda-Fujishima effect

It is well-known that the photocatalytic oxidation-reduction reaction of Ti02 irradiated with UV light can decompose organic compounds adsorbed on the surface. This photocatalytic oxidation-reduction reaction originated from the discovery of water-splitting on TiC>2 semiconductor electrodes irradiated with UV light, which is known as the Honda-Fujishima effect and was reported in Nature in 1972 [1], This effect attracted considerable attention after the first oil crisis. 

Fujishima, A. Honda, K. Nature 1972,238, 37 "Honda-Fujishima effect" is a well-known chemical phenomenon closely related to photocatalysis and the paper published in Nature in 1972 had undoubtedly promoted research activity of photocatalysis but not an origin of heterogeneous photocatalysis in the bibliographic sense (Ref 3(a)). 

Photolysis of Water, Fig. 1 Honda-Fujishima effect for water splitting using an n-type Ti02 photoelectrode... 

Titania acts as an electrode or electrode coating in photoelectrolysis cells to enhance the efficiency of electrolytic splitting of water into hydrogen and oxygen (the Honda-Fujishima effect see below). The most important use of the photocatalytic functional performance of titania (in particular anatase) has been found in the... 

Honda-Fujishima effect is based on the following reaction steps ... 

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